EP1965127B1 - Protection device for a light - Google Patents
Protection device for a light Download PDFInfo
- Publication number
- EP1965127B1 EP1965127B1 EP08003705.4A EP08003705A EP1965127B1 EP 1965127 B1 EP1965127 B1 EP 1965127B1 EP 08003705 A EP08003705 A EP 08003705A EP 1965127 B1 EP1965127 B1 EP 1965127B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- illuminant
- holder
- protection device
- partition
- lamp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Not-in-force
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V15/00—Protecting lighting devices from damage
- F21V15/01—Housings, e.g. material or assembling of housing parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/04—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages the fastening being onto or by the light source
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/06—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages the fastening being onto or by the lampholder
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V25/00—Safety devices structurally associated with lighting devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
Definitions
- the invention relates to a protective device for a lamp, in particular a protective device in order to prevent a risk from unintentional contact of electrically acted components of a lamp.
- the IP 40 luminaire rating requires a housing that prevents penetration of a 1 mm diameter straight wire between the end of the lamp and the socket.
- DE 197 14 860 A 1 discloses a lamp socket with a protective device against the ingress of particles.
- the protective device essentially covers only the area between the lamp socket and a tubular lamp.
- the protective device is mounted with a plug connection to a lamp socket and extends over the entire circumference of the gap between the lamp socket and the lamp.
- a protective sleeve which is slidably slid onto a tubular fluorescent lamp.
- the protective sleeve can be slid over a lamp socket when the bulb is mounted with a cut-out in order to protect the boundary area between the fluorescent lamp and the bulb socket against the ingress of dust.
- a protective device is known, which is composed of two halves and is connected to a plug connection in order to mount the protective device on the fluorescent lamp and the lamp socket.
- Object of the present invention is to protect existing lights by a simple structural measure against the ingress of foreign bodies.
- it is desirable to protect a known luminaire at least in accordance with the luminaire classification IP 40.
- the object is achieved by a protective device according to claim 1 for a lamp with at least one light source, which is electrically connected in at least one version of the lamp solved.
- the protective device comprises a cap, which is attachable to the lamp and / or on the socket, with a first portion which surrounds at least a portion of the circumference of the bulb, and a second portion which surrounds at least a portion of the circumference of the socket, wherein the first and second subregions are interconnected such that a gap between the illuminant and the lamp socket is covered over at least part of its circumference.
- Lamp and the socket can effectively prevent the ingress of foreign bodies.
- the protection device has even more advantages over the structurally much more complex constructions of the prior art.
- the cap can be easily retrofitted to the already mounted in the socket bulbs without disassembly of the bulb is required.
- the cap of the protection device can be matched to existing bulbs and sockets, so that a subsequent attachment of the protection device to old lights is possible, i.
- Cover caps are provided which can be plugged onto existing illuminants or on the lights existing versions.
- fluorescent tubes such as T5, T8 or T12 lamps (tube diameter 16 mm, 26 mm or 32 mm) and their corresponding versions are taken into account.
- the device can also be applied to single-ended lamps, such as compact fluorescent tubes.
- the inner surface of the first subarea facing the illuminant defines a pitch circle in a cross section perpendicular to a longitudinal axis of the illuminant.
- the pitch circle may extend in particular over 180 ° or more.
- the inner surface of the first portion is not formed in cross-section as a full circle.
- the first portion is elastically deformable to apply a clamping force to the lamp in the assembled state of the cap.
- the cap can be held non-positively on the light source.
- a frictional connection with the socket is not necessary in this embodiment, However, it can also be provided in addition. Alternatively, an adhesion can only be exercised on the socket.
- the first portion has two wings, which extend in the assembled state of the cap away from the bulb.
- the wings in the mounted state can adjoin a part of the luminaire housing which is adjacent to the luminous means.
- the gap between the lamp and socket is covered for the entire circumference, even if the inner surface of the first portion does not extend completely around the lamp.
- the wings can be gripped by hand or with a tool in order to bend off the cover cap from the lighting means, the first portion against the elastic force. In this way, the cap can be easily removed from the bulb, for example, to replace a defective bulb.
- the wings are each provided with a recess which in the mounted state of the cap adjacent to a base of the socket.
- other recesses may be provided to allow a positive engagement of the wings on the lamp or on the socket of the lamp.
- the second portion of the cap has, according to a preferred embodiment, in the mounted state to the socket facing inner surface which is U-shaped in a cross section perpendicular to a Leuchtstoffl Kunststoffsachse.
- the inner surface has the same shape as the outline of the light-side socket.
- the inner surface of the second portion can rest positively on the outside of the base. However, it may also be a gap, preferably less than 2 mm wide, formed. In this way, the gap between the lamp and the socket is also covered from the direction of the socket to prevent ingress of foreign bodies.
- the cap on the facing to the socket and / or the illuminant inner surfaces one or more positive locking elements which cooperate positively with elevations or depressions on the outside of the socket or the illuminant, an axial displacement of the cap along the Leuchtffensachse to prevent.
- the displacement in one direction or in both directions along the longitudinal axis of the lamp can be prevented.
- This fuse can prevent unintentional displacement of the cap in addition to the clamping action of the cap on the bulb or socket.
- the cap can be held up to a maximum withdrawal force of 1 Newton. This pull-off force allows effective protection against accidental contact by foreign bodies, but still allows the cap to easily be removed by hand, for example, to replace the bulb.
- the inner surface of the first subregion facing the illuminant forms a step relative to the inner surface of the second subregion facing the frame in a cross-sectional plane in which the illuminant longitudinal axis lies.
- the step can fit positively at the transition between the lamp and socket. In this way, a displacement of the cap along the illuminant longitudinal axis is blocked in at least one direction.
- a projection is provided on the inner surface facing the frame of the second portion, which can engage in a corresponding groove in a lamp socket.
- a groove on the socket anyway to insert the electrically projecting contacts of the fluorescent tube laterally into the socket.
- This groove can also be used to secure the cap.
- the provided on the inner surface of the cap projection in the second portion needs to be matched only in size and shape to the groove or grooves of known versions. The projection prevented by the positive engagement with the groove, a displacement of the cap in the longitudinal direction of the bulb in both directions. Since the projection extends on the inner surface of the cap in the radial direction to the longitudinal axis of the lamp, despite the positive connection, the cap can be easily removed in the radial direction of the lamp or the socket.
- the protective device of the present invention consists in the simplest embodiment of a single cap 2 for each version of the lamp.
- the cover 2 comprises essentially two subregions.
- the first portion 4 has an inner surface 5, which defines the shape of a pitch circle in a cross section perpendicular to the longitudinal extent of the cap 2.
- the inner surface 5 is dimensioned so that it can fit positively against the outside of a fluorescent lamp, such as in FIG. 5 is shown.
- the pitch circle extends more than 180 °, but is not completely closed. Since the first portion 4 is elastically deformable, it can be plugged by bending on a cylindrical bulb 10.
- two wings 8 are further provided, which extend in the assembled state of the cap 2 from the bulb 10 away. Like in the FIG. 4 is shown, close the outer edges of the wings 8 in the assembled state flush with the light.
- a cutout 9 is provided in each of the wings, which is formed in the shape corresponding to a base 12 of the light-side socket.
- a second portion 6 of the cap 2 surrounds the light-side frame 11 in the assembled state.
- the inner surface 7 of the second portion 6 is approximately U-shaped, such as in the top view of FIG. 2 you can see. This shape corresponds approximately to the outer contour of a standard version used for fluorescent lamps. Like in the FIG. 2 is shown, the inner surface 7 is not exactly U-shaped, but is slightly offset on the side parts to the outside, so that the portions 4 and 6 are connected to each other only over a relatively short radius. This allows the elastic movement of the first portion 4 for attaching and removing the cover sleeve on the bulb 10th
- the outwardly offset side parts of the portion 6 are about 3 mm above the first portion 4 via.
- the survival of portions of the second portion 6 over the first portion 4, e.g. 1 mm to 5 mm, is preferable for preventing the penetration of foreign matter in the region where the first portion 4 and the second portion 6 are not connected to each other.
- the inner surface 7 of the second portion 6 has a projection 14 which faces radially inwardly of the illuminant axis.
- the projection 14 engages in a groove of the socket 11. It is the groove, which is provided in the socket for such fluorescent tubes anyway, to introduce the protruding electrical connection contacts (not shown) of the bulb laterally in the socket.
- the projection 14 engages positively in this groove, so that an axial movement of the cover 2 is blocked along the longitudinal direction of the lamp in both directions.
- the previously described embodiment of the cap is integrally formed. It is in particular a plastic element, for example of a thermoplastic.
- the plastics have the necessary elastic properties in order to be able to attach and remove the covering cap several times on the illuminant, without the risk of breakage.
- the cap 2 or the portion 4 comes into contact only with an end portion 16 of the bulb 10, which is reinforced. This minimizes the risk of breakage of the luminous means, even if relatively strong clamping forces act on the luminous means.
- FIGS. 6 and 7 show an alternative embodiment of a cap 2.
- this cap is compared to the previously described the first portion 4, which comes in contact with the bulb, running considerably longer.
- the partial region 4 extends over 10 mm to 75 mm in the longitudinal direction of the luminous means.
- the connection area between the partial area 6 and the partial area 4 is completely closed.
- the defined by the inside 5 cross section of the portion 4 is tuned to the cross section of a T5 fluorescent lamp.
- This lamp type has a diameter of 16 mm in cross section.
- a special feature of these fluorescent lamps is a so-called cold spot or "cold spot" in the lamp, which forms a constructively defined point in the lamp, can condense the mercury during operation of the lamp. Details of such lamps are disclosed, for example, in the publication DE 101 20 667 A1 the disclosure of which is incorporated herein by reference for the details of the illuminant and the optimum operating temperature thereof. At a cool to the optimum operating temperature environment of the lamp whose light output is reduced because too high a proportion of the mercury contained in the lamp condenses.
- the cap of the FIGS. 6 and 7 is specifically designed to operate lamps in an environment that has too low a temperature for optimal lamp output.
- the portion 4 the area of the cold spot of the T5 lamp is maintained at a higher temperature, so that - sets a higher operating temperature in the cold spot of the T5 lamp - in thermal equilibrium. This has a higher luminous flux of the lamp and thus a high efficiency of the lamp result.
- This effect depending on the ambient temperature already in the embodiment of a cap with a shorter portion 4 according to the FIGS. 1 to 5 enter.
- the extended portion 4 as in the embodiment of the FIGS. 6 and 7 , this effect has been increased.
- the length of subregion 4 may be dependent from the ambient temperature of the lamp, to be optimized. Particularly preferred lengths of the portion 4 are for example 12 mm to 40 mm.
- the cap may be constructed for other illuminant shapes than the cylindrical shape shown.
- the area to be protected is oval in cross-section, for example.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
Description
Die Erfindung betrifft eine Schutzvorrichtung für eine Leuchte, insbesondere eine Schutzvorrichtung, um eine Gefährdung durch eine unbeabsichtigte Berührung von elektrisch beaufschlagten Komponenten einer Leuchte zu verhindern.The invention relates to a protective device for a lamp, in particular a protective device in order to prevent a risk from unintentional contact of electrically acted components of a lamp.
Bei Leuchten mit offenliegenden Leuchtmitteln besteht eine Gefahr für den Benutzer, mit elektrisch beaufschlagten Komponenten insbesondere in dem Bereich zwischen dem Leuchtmittel und der leuchtenseitigen Fassung in Berührung zu kommen. Aus technischen Gründen läßt sich der Spalt zwischen Leuchtmittel und Fassung nicht so schmal ausführen (beispielsweise größer als 1 mm), um ausschließen zu können, daß kein Fremdkörper in diesen Spalt gelangt. Insbesondere bei Arbeitsplatzleuchten könnten z.B. Metallspäne oder Holzspäne mit den elektrischen Kontakten in der Fassung bzw. an dem Leuchtmittel in Berührung kommen.In the case of luminaires with exposed illuminants, there is a risk for the user to come into contact with components which are acted upon electrically, in particular in the region between the luminous means and the luminaire-side mount. Due to technical reasons can the gap between the bulb and socket not run so narrow (for example, greater than 1 mm) in order to rule out that no foreign body enters this gap. In particular, in workplace lights, for example, metal shavings or wood chips could come into contact with the electrical contacts in the socket or on the light source.
Beispielsweise fordert die Leuchtenschutzklassifizierung IP 40 ein Gehäuse, welches das Eindringen mit einem gradlinigen Draht von 1 mm Durchmesser zwischen Lampenende und Fassung verhindert.For example, the IP 40 luminaire rating requires a housing that prevents penetration of a 1 mm diameter straight wire between the end of the lamp and the socket.
Aus dem Stand der Technik sind Leuchten bekannt, die diese Schutzklasse oder noch höhere Schutzklassen verfüllen. Insbesondere sind Leuchten bekannt, die gegen eindringenden Staub oder Feuchtigkeit geschützt sind. Die Schutzvorrichtungen sind jedoch verhältnismäßig aufwendig zu montieren und erfordern darüber hinaus eine speziell für den entsprechenden Schutz angepaßte Leuchte.From the prior art lamps are known that fill this class or even higher protection classes. In particular, luminaires are known which are protected against penetrating dust or moisture. However, the protective devices are relatively expensive to install and also require a specially adapted for the appropriate protection lamp.
Aufgabe der vorliegenden Erfindung ist es, vorhandene Leuchten durch eine einfache bauliche Maßnahme vor dem Eindringen von Fremdkörpern zu schützen. Insbesondere ist es wünschenswert, eine bekannte Leuchte wenigstens entsprechend der Leuchtenklassifizierung IP 40 zu schützen.Object of the present invention is to protect existing lights by a simple structural measure against the ingress of foreign bodies. In particular, it is desirable to protect a known luminaire at least in accordance with the luminaire classification IP 40.
Die Aufgabe wird durch eine Schutzvorrichtung nach Anspruch 1 für eine Leuchte mit wenigstens einem Leuchtmittel, das in wenigstens einer Fassung der Leuchte elektrisch anschließbar ist, gelöst. Die Schutzvorrichtung umfaßt eine Abdeckkappe, die auf das Leuchtmittel und/oder auf die Fassung aufsteckbar ist, mit einem ersten Teilbereich, der wenigstens ein Teil des Umfangs des Leuchtmittels umgibt, und einem zweiten Teilbereich, der wenigstens einen Teil des Umfangs der Fassung umgibt, wobei der erste und der zweite Teilbereich so miteinander verbunden sind, daß ein Spalt zwischen dem Leuchtmittel und der Lampenfassung wenigstens über einen Teil seines Umfangs abgedeckt ist. Durch die Abdeckung des Spalts zwischen demThe object is achieved by a protective device according to claim 1 for a lamp with at least one light source, which is electrically connected in at least one version of the lamp solved. The protective device comprises a cap, which is attachable to the lamp and / or on the socket, with a first portion which surrounds at least a portion of the circumference of the bulb, and a second portion which surrounds at least a portion of the circumference of the socket, wherein the first and second subregions are interconnected such that a gap between the illuminant and the lamp socket is covered over at least part of its circumference. By covering the gap between the
Leuchtmittel und der Fassung läßt sich das Eindringen von Fremdkörpern wirksam verhindern. Die Schutzvorrichtung hat aber noch weitere Vorzüge gegenüber den baulich sehr viel aufwendigeren Konstruktionen aus dem Stand der Technik. Insbesondere läßt sich die Abdeckkappe auf das bereits in der Fassung montierte Leuchtmittel einfach nachträglich aufstecken, ohne daß eine Demontage des Leuchtmittels dazu erforderlich ist.Lamp and the socket can effectively prevent the ingress of foreign bodies. The protection device has even more advantages over the structurally much more complex constructions of the prior art. In particular, the cap can be easily retrofitted to the already mounted in the socket bulbs without disassembly of the bulb is required.
Insbesondere kann die Abdeckkappe der Schutzvorrichtung auf bereits vorhandene Leuchtmittel und Fassungen abgestimmt werden, so daß auch ein nachträgliches Anbringen der Schutzvorrichtung an Altleuchten möglich ist, d.h. es sind Abdeckkappen vorgesehen, die auf bereits vorhandene Leuchtmittel bzw. auf die leuchtenseitig vorhandenen Fassungen aufgesteckt werden können. Insbesondere sind Leuchtstoffröhren, etwa wie T5, T8 oder T12-Lampen (Rohrdurchmesser 16 mm, 26 mm bzw. 32 mm) und deren entsprechende Fassungen berücksichtigt. Die Vorrichtung kann jedoch auch bei einseitig gesockelten Leuchtmitteln, wie beispielsweise bei Kompaktleuchtstoffröhren, angewandt werden.In particular, the cap of the protection device can be matched to existing bulbs and sockets, so that a subsequent attachment of the protection device to old lights is possible, i. Cover caps are provided which can be plugged onto existing illuminants or on the lights existing versions. In particular, fluorescent tubes, such as T5, T8 or T12 lamps (
Gemäß der vorliegenden Erfindung definiert die zum Leuchtmittel gewandte Innenfläche des ersten Teilbereichs in einem Querschnitt senkrecht zu einer Leuchtmittellängsachse einen Teilkreis. Der Teilkreis kann sich insbesondere über 180° oder mehr erstrecken. Um ein Aufstecken der Abdeckkappe bei bereits in der Fassung montierten Leuchtmitteln zu ermöglichen, ist bei dieser Ausführungsform jedoch die Innenfläche des ersten Teilbereichs im Querschnitt nicht als Vollkreis ausgebildet.According to the present invention, the inner surface of the first subarea facing the illuminant defines a pitch circle in a cross section perpendicular to a longitudinal axis of the illuminant. The pitch circle may extend in particular over 180 ° or more. In order to enable a plugging of the cap when already mounted in the socket bulbs, in this embodiment, however, the inner surface of the first portion is not formed in cross-section as a full circle.
Gemäß einer bevorzugten Ausführungsform ist der erste Teilbereich elastisch verformbar, um im montierten Zustand der Abdeckkappe eine Klemmkraft auf das Leuchtmittel aufzubringen. In dieser Ausführungsform kann die Abdeckkappe kraftschlüssig an dem Leuchtmittel gehalten werden. Ein Kraftschluß mit der Fassung ist bei dieser Ausführungsform nicht notwendig, kann jedoch zusätzlich auch vorgesehen sein. Alternativ kann ein Kraftschluß nur auf die Fassung ausgeübt werden.According to a preferred embodiment, the first portion is elastically deformable to apply a clamping force to the lamp in the assembled state of the cap. In this embodiment, the cap can be held non-positively on the light source. A frictional connection with the socket is not necessary in this embodiment, However, it can also be provided in addition. Alternatively, an adhesion can only be exercised on the socket.
Gemäß einer Ausführungsform weist der erste Teilbereich zwei Flügel auf, die sich im montierten Zustand der Abdeckkappe von dem Leuchtmittel weg erstrecken. Insbesondere können die Flügel im montierten Zustand an einem dem Leuchtmittel benachbarten Teil des Leuchtengehäuses angrenzen. Auf diese Weise wird der Spalt zwischen Leuchtmittel und Fassung für den gesamten Umfang abgedeckt, auch wenn sich die Innenfläche des ersten Teilbereichs nicht vollständig um das Leuchtmittel erstreckt. Ferner können die Flügel mit der Hand oder einem Werkzeug gegriffen werden, um zum Abziehen der Abdeckkappe von dem Leuchtmittel, den ersten Teilbereich entgegen der elastischen Kraft aufzubiegen. Auf diese Weise läßt sich die Abdeckkappe leicht von dem Leuchtmittel abnehmen, um beispielsweise ein defektes Leuchtmittel auszutauschen.According to one embodiment, the first portion has two wings, which extend in the assembled state of the cap away from the bulb. In particular, the wings in the mounted state can adjoin a part of the luminaire housing which is adjacent to the luminous means. In this way, the gap between the lamp and socket is covered for the entire circumference, even if the inner surface of the first portion does not extend completely around the lamp. Furthermore, the wings can be gripped by hand or with a tool in order to bend off the cover cap from the lighting means, the first portion against the elastic force. In this way, the cap can be easily removed from the bulb, for example, to replace a defective bulb.
Nach einer bevorzugten Weiterbildung der vorhergehend genannten Ausführungsform sind die Flügel mit jeweils einer Aussparung versehen, die im montierten Zustand der Abdeckkappe an einem Sockel der Fassung angrenzen. Gegebenenfalls können auch andere Aussparungen vorgesehen sein, um ein formschlüssiges Anliegen der Flügel an der Leuchte bzw. an der Fassung der Leuchte zu ermöglichen.According to a preferred embodiment of the aforementioned embodiment, the wings are each provided with a recess which in the mounted state of the cap adjacent to a base of the socket. Optionally, other recesses may be provided to allow a positive engagement of the wings on the lamp or on the socket of the lamp.
Der zweite Teilbereich der Abdeckkappe weist gemäß einer bevorzugten Ausführungsform eine im montierten Zustand zur Fassung weisende Innenfläche auf, die in einem Querschnitt senkrecht zu einer Leuchtmittellängsachse U-förmig ist. Vorzugsweise weist die Innenfläche die gleiche Form auf wie der Umriß der leuchtenseitigen Fassung. Die Innenfläche des zweiten Teilbereichs kann formschlüssig an der Außenseite des Sockels anliegen. Es kann jedoch auch ein Spalt, vorzugsweise weniger als 2 mm Breite, gebildet sein. Auf diese Weise wird der Spalt zwischen dem Leuchtmittel und der Fassung auch aus der Richtung der Fassung abgedeckt, um ein Eindringen von Fremdkörpern zu verhindern.The second portion of the cap has, according to a preferred embodiment, in the mounted state to the socket facing inner surface which is U-shaped in a cross section perpendicular to a Leuchtmittellängsachse. Preferably, the inner surface has the same shape as the outline of the light-side socket. The inner surface of the second portion can rest positively on the outside of the base. However, it may also be a gap, preferably less than 2 mm wide, formed. In this way, the gap between the lamp and the socket is also covered from the direction of the socket to prevent ingress of foreign bodies.
Gemäß einer bevorzugten Ausführungsform weist die Abdeckkappe auf den zur Fassung und/oder den zum Leuchtmittel weisenden Innenflächen ein oder mehrere Formschlußelemente auf, die mit Erhebungen oder Vertiefungen auf der Außenseite der Fassung oder des Leuchtmittels formschlüssig zusammenwirken, um ein axiales Verschieben der Abdeckkappe entlang der Leuchtmittellängsachse zu verhindern. Insbesondere kann das Verschieben in eine Richtung oder in beiden Richtungen entlang der Leuchtmittellängsachse verhindert werden. Diese Sicherung kann zusätzlich zu der Klemmwirkung der Abdeckkappe auf das Leuchtmittel oder die Fassung ein unbeabsichtigtes Verschieben der Abdeckkappe verhindern. Insbesondere kann durch die Klemmwirkung der Abdeckkappe und/oder durch weitere Formschlußelemente, wie vorhergehend beschrieben, die Abdeckkappe bis zu einer maximalen Abzugskraft von 1 Newton gehalten werden. Diese Abzugskraft ermöglicht einen wirksamen Schutz gegen unbeabsichtigte Berührung durch Fremdkörper, erlaubt es aber dennoch, die Kappe leicht von Hand abzuziehen, beispielsweise um das Leuchtmittel auszutauschen.According to a preferred embodiment, the cap on the facing to the socket and / or the illuminant inner surfaces one or more positive locking elements which cooperate positively with elevations or depressions on the outside of the socket or the illuminant, an axial displacement of the cap along the Leuchtmittellängsachse to prevent. In particular, the displacement in one direction or in both directions along the longitudinal axis of the lamp can be prevented. This fuse can prevent unintentional displacement of the cap in addition to the clamping action of the cap on the bulb or socket. In particular, by the clamping action of the cap and / or by other form-locking elements, as described above, the cap can be held up to a maximum withdrawal force of 1 Newton. This pull-off force allows effective protection against accidental contact by foreign bodies, but still allows the cap to easily be removed by hand, for example, to replace the bulb.
Gemäß einer bevorzugten Ausführungsform bildet die zum Leuchtmittel weisende Innenfläche des ersten Teilbereichs gegenüber der zur Fassung weisenden Innenfläche des zweiten Teilbereichs in einer Querschnittsebene, in der die Leuchtmittellängsachse liegt, eine Stufe. Die Stufe kann formschlüssig an dem Übergang zwischen Leuchtmittel und Fassung anliegen. Auf diese Weise wird ein Verschieben der Abdeckkappe entlang der Leuchtmittellängsachse in wenigstens einer Richtung blockiert.According to a preferred embodiment, the inner surface of the first subregion facing the illuminant forms a step relative to the inner surface of the second subregion facing the frame in a cross-sectional plane in which the illuminant longitudinal axis lies. The step can fit positively at the transition between the lamp and socket. In this way, a displacement of the cap along the illuminant longitudinal axis is blocked in at least one direction.
Gemäß einer weiteren bevorzugten Ausführungsform ist auf der zur Fassung weisenden Innenfläche des zweiten Teilbereichs ein Vorsprung vorgesehen, der in eine entsprechende Nut in einer Lampenfassung eingreifen kann. Bei Fassungen für Leuchtstoffröhren ist in der Regel ohnehin eine solche Nut an der Fassung vorhanden, um die elektrisch vorstehenden Kontakte der Leuchtstoffröhre seitlich in die Fassung einzuschieben. Diese Nut kann auch zum Sichern der Abdeckkappe benutzt werden. Der auf der Innenfläche der Abdeckkappe vorgesehene Vorsprung im zweiten Teilbereich braucht nur in Größe und Form auf die Nut oder Nuten bekannter Fassungen abgestimmt zu werden. Der Vorsprung verhindert durch den Formschluß mit der Nut ein Verschieben der Abdeckkappe in Längsrichtung des Leuchtmittels in beiden Richtungen. Da sich der Vorsprung auf der Innenfläche der Abdeckkappe in radialer Richtung zur Leuchtmittellängsachse erstreckt, kann trotz des Formschlusses die Abdeckkappe leicht in radialer Richtung von dem Leuchtmittel bzw. der Fassung abgezogen werden.According to a further preferred embodiment, a projection is provided on the inner surface facing the frame of the second portion, which can engage in a corresponding groove in a lamp socket. In versions for fluorescent tubes is usually such a groove on the socket anyway to insert the electrically projecting contacts of the fluorescent tube laterally into the socket. This groove can also be used to secure the cap. The provided on the inner surface of the cap projection in the second portion needs to be matched only in size and shape to the groove or grooves of known versions. The projection prevented by the positive engagement with the groove, a displacement of the cap in the longitudinal direction of the bulb in both directions. Since the projection extends on the inner surface of the cap in the radial direction to the longitudinal axis of the lamp, despite the positive connection, the cap can be easily removed in the radial direction of the lamp or the socket.
Eine bevorzugte Ausführungsform der Schutzvorrichtung wird nachfolgend anhand der beigefügten Figuren beschrieben.
- Figur 1
- zeigt eine perspektivische Ansicht einer Abdeckkappe.
Figur 2- zeigt eine Aufsicht der Abdeckkappe nach
Figur 1 , wobei die Blickrichtung der Leuchtmittellängsachse entspricht. - Figur 3
- zeigt eine Seitenansicht der Abdeckkappe.
Figur 4- zeigt in einer Teilansicht eine perspektivische Darstellung einer Leuchte mit Leuchtstofflampe, wobei die Abdeckkappe gemäß
Figur 1 über den Sockel bzw. das Ende der Leuchtstoffröhre aufgesteckt ist. Figur 5- zeigt eine Schnittdarstellung der
Figur 4 in einem Querschnitt parallel zur Leuchtmittellängsachse. Figur 6- zeigt eine perspektivische Ansicht einer weiteren Ausführungsform einer Abdeckkappe.
Figur 7- zeigt eine Seitenansicht der Abdeckkappe nach
Figur 6 .
- FIG. 1
- shows a perspective view of a cap.
- FIG. 2
- shows a top view of the cap after
FIG. 1 , wherein the viewing direction of the illuminant longitudinal axis corresponds. - FIG. 3
- shows a side view of the cap.
- FIG. 4
- shows in a partial view a perspective view of a luminaire with fluorescent lamp, wherein the cap according to
FIG. 1 is fitted over the base or the end of the fluorescent tube. - FIG. 5
- shows a sectional view of the
FIG. 4 in a cross section parallel to the bulb longitudinal axis. - FIG. 6
- shows a perspective view of another embodiment of a cap.
- FIG. 7
- shows a side view of the cap after
FIG. 6 ,
Die Schutzvorrichtung der vorliegenden Erfindung besteht in der einfachsten Ausführungsform aus einer einzelnen Abdeckkappe 2 für jede Fassung der Leuchte. Wie in der perspektivischen Darstellung der
An dem ersten Teilbereich 4 sind ferner zwei Flügel 8 vorgesehen, die sich im montierten Zustand der Abdeckkappe 2 von dem Leuchtmittel 10 weg erstrecken. Wie in der
Ein zweiter Teilbereich 6 der Abdeckkappe 2 umgibt im montierten Zustand die leuchtenseitige Fassung 11. Die Innenfläche 7 des zweiten Teilbereichs 6 ist etwa U-förmig ausgebildet, wie beispielsweise in der Aufsicht der
Die nach außen versetzten Seitenteile des Teilbereichs 6 stehen etwa 3 mm über den ersten Teilbereich 4 über. Das Überstehen von Abschnitten des zweiten Teilbereichs 6 über den ersten Teilbereich 4, z.B. mit 1 mm bis 5 mm, ist bevorzugt, um das Eindringen von Fremdkörpern in dem Bereich zu verhindern, an dem der erste Teilbereich 4 und der zweite Teilbereich 6 nicht miteinander verbunden sind.The outwardly offset side parts of the
Wie in der
Die vorhergehend beschriebene Ausführungsform der Abdeckkappe ist einstückig ausgebildet. Es handelt sich insbesondere um ein Kunststoffelement, beispielsweise aus einem Thermoplast. Die Kunststoffe verfügen über die notwendigen elastischen Eigenschaften, um die Abdeckkappe auf das Leuchtmittel mehrfach aufstecken und Abziehen zu können, ohne daß eine Bruchgefahr gegeben ist.The previously described embodiment of the cap is integrally formed. It is in particular a plastic element, for example of a thermoplastic. The plastics have the necessary elastic properties in order to be able to attach and remove the covering cap several times on the illuminant, without the risk of breakage.
Vorzugsweise kommt die Abdeckkappe 2 bzw. der Teilbereich 4 nur mit einem Endbereich 16 des Leuchtmittels 10 in Berührung, der verstärkt ist. Dadurch wird eine Bruchgefahr des Leuchtmittels minimiert, selbst wenn verhältnismäßig starke Klemmkräfte auf das Leuchtmittel einwirken.Preferably, the
Die
Der durch die Innenseite 5 festgelegte Querschnitt des Teilbereichs 4 ist auf den Querschnitt einer T5-Leuchtstofflampe abgestimmt. Dieser Lampentyp weist im Querschnitt einen Durchmesser von 16 mm auf. Eine besondere Eigenschaft dieser Leuchtstofflampen ist eine sogenannte Kühlstelle oder Kaltfuß ("cold spot") in der Lampe, welche einen konstruktiv definierten Punkt in der Lampe bildet, an dem Quecksilber im Betrieb der Lampe kondensieren kann. Einzelheiten zu derartigen Lampen sind beispielsweise in der Offenlegungsschrift
Die Abdeckkappe der
Weitere alternative Ausführungsformen der vorhergehend beschriebenen Sicherungsvorrichtung sind berücksichtigt. Beispielsweise kann die Abdeckkappe für andere Leuchtmittelformen als die gezeigte zylindrische Form konstruiert sein. Bei einseitig gesockelten Kompaktleuchtstofflampen ist der zu schützende Bereich beispielsweise im Querschnitt oval ausgebildet.Further alternative embodiments of the securing device described above are taken into consideration. For example, the cap may be constructed for other illuminant shapes than the cylindrical shape shown. For single-capped compact fluorescent lamps, the area to be protected is oval in cross-section, for example.
- 22
- Abdeckkappecap
- 44
- Erster TeilbereichFirst section
- 55
- Innenflächepalm
- 66
- Zweiter TeilbereichSecond subarea
- 77
- Innenflächepalm
- 88th
- Flügelwing
- 99
- Ausschnittneckline
- 1010
- LeuchtmittelLamp
- 1111
- Fassungversion
- 1212
- Sockel der FassungSocket of the socket
- 1414
- Vorsprunghead Start
- 1616
- Endbereich des LeuchtmittelsEnd of the bulb
Claims (10)
- Protection device for a light with at least one illuminant (10) and a holder (11), on which the illuminant (10) can be electrically connected, a protective cap (2), which can be attached on the illuminant (10) and / or on the light holder (11), with a first partition (4), which surrounds at least one part of the peripheral of the illuminant (10), and with a second partition (6) which surrounds at least one part of the peripheral of the holder (11), wherein the first and the second partitions (4, 6) are connected, so that a gap between the illuminant (10) and the holder (11) is covered at least over one part of its peripheral, characterised in that an inner surface (5) of the first partition (4) turned towards the illuminant in a cross-section perpendicular to a longitudinal axis of the illuminant defines a pitch circle, to allow the protective cap (2) to be attached when the illuminant (10) is already fitted in the holder (11).
- Protection device according to claim 1, wherein the pitch circle extends over 180° or more.
- Protection device according to one of the previous claims, wherein the first and / or second partitions (4, 6) can be elastically deformed, in order to apply a clamping force on the illuminant (10) or on the holder (11) with the protective cap in its fitted state.
- Protection device according to one of the previous claims, wherein the first partition (4) has two wings (8) which extend away from the illuminant (10) with the protective cap (2) in its fitted state.
- Protection device according to claim 4, wherein the wings each have a recess (9) which, with the protective cap (2) in its fitted state, are adjacent to a base (12) of the holder (11).
- Protection device according to one of the previous claims, wherein the second partition (6) on an inner surface (7) facing the holder is U-shaped in a cross-section perpendicular to a longitudinal axis of the illuminant.
- Protection device according to one of the previous claims, wherein the protective cap (2) on an inner surface (5, 7) facing the holder (11) and / or on an inner surface facing the illuminant (10) has one or more tight-fitting elements (14), which interact with tight-fitting elements of the holder (11) or of the illuminant, to prevent an axial shifting of the protective cap (2) along a longitudinal axis of the illuminant in one or both directions.
- Protection device according to one of the previous claims, wherein the inner surface (5) of the first partition (4) facing the illuminant (10) defines a step relative to the inner surface (7) of the second partition (6) facing the holder (11) on a cross-sectional plane on which the longitudinal axis of the illuminant lies.
- Protection device according to one of the previous claims, wherein on the inner surface (7) facing the holder, the second partition has a projection (14) which can engage in a groove on the light holder.
- Protection device according to one of the previous claims, wherein the first partition (4) has a length in the direction of the longitudinal axis of the illuminant of between 10 mm and 75 mm, particularly preferably between 12 mm and 40 mm.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007009733 | 2007-02-28 | ||
DE102007030115 | 2007-06-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1965127A1 EP1965127A1 (en) | 2008-09-03 |
EP1965127B1 true EP1965127B1 (en) | 2014-08-13 |
Family
ID=39469509
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08003705.4A Not-in-force EP1965127B1 (en) | 2007-02-28 | 2008-02-28 | Protection device for a light |
Country Status (1)
Country | Link |
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EP (1) | EP1965127B1 (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4324225C2 (en) * | 1993-07-20 | 1996-07-11 | Trilux Lenze Gmbh & Co Kg | Dust-protected lamp with a fluorescent lamp |
DE19522719C1 (en) * | 1995-06-22 | 1997-01-30 | Stahl R Schaltgeraete Gmbh | Explosion-proof lamp holder with contact means that can be opened and closed |
DE19714860C2 (en) * | 1997-04-10 | 1999-02-25 | Broekelmann Jaeger & Busse | Lamp holder with protective device against the ingress of particles |
DE10120667B4 (en) | 2001-04-27 | 2007-11-22 | Siteco Beleuchtungstechnik Gmbh | Lamp with a lamp with cooled cold foot |
-
2008
- 2008-02-28 EP EP08003705.4A patent/EP1965127B1/en not_active Not-in-force
Also Published As
Publication number | Publication date |
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EP1965127A1 (en) | 2008-09-03 |
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